add (overwrite with) mypy stubs, if available

stdlib/2.7/distutils/__init__.pyi

@@ -0,0 +1,7 @@
+# Stubs for distutils (Python 2)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any
+
+__revision__ = ... # type: Any

stdlib/2.7/distutils/version.pyi

@@ -0,0 +1,23 @@
+# Stubs for distutils.version (Python 2)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any
+
+class Version:
+    def __init__(self, vstring=None): ...
+
+class StrictVersion(Version):
+    version_re = ... # type: Any
+    version = ... # type: Any
+    prerelease = ... # type: Any
+    def parse(self, vstring): ...
+    def __cmp__(self, other): ...
+
+class LooseVersion(Version):
+    component_re = ... # type: Any
+    def __init__(self, vstring=None): ...
+    vstring = ... # type: Any
+    version = ... # type: Any
+    def parse(self, vstring): ...
+    def __cmp__(self, other): ...